Citazione Stile APA (7a Edizione)

Eckes, A. E. (2009). U.S. trade issues: A reference handbook. ABC-CLIO.

Citazione stile Chigago Style (17a edizione)

Eckes, Alfred E. U.S. Trade Issues: A Reference Handbook. Santa Barbara, Calif.: ABC-CLIO, 2009.

Citatione MLA (9a ed.)

Eckes, Alfred E. U.S. Trade Issues: A Reference Handbook. ABC-CLIO, 2009.